CN109231277B - A method of making a D50: preparation method and application of manganese dioxide particles with particle size of 30-35 mu m - Google Patents
A method of making a D50: preparation method and application of manganese dioxide particles with particle size of 30-35 mu m Download PDFInfo
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- CN109231277B CN109231277B CN201811381270.6A CN201811381270A CN109231277B CN 109231277 B CN109231277 B CN 109231277B CN 201811381270 A CN201811381270 A CN 201811381270A CN 109231277 B CN109231277 B CN 109231277B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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- H01M10/05—Accumulators with non-aqueous electrolyte
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Abstract
The invention discloses a method for preparing a compound D50: a preparation method and application of manganese dioxide particles with the particle size of 30-35 mu m, belonging to the field of manganese dioxide material preparation. Firstly, preparing a precipitator solution, dividing the precipitator solution into 2 parts, and slowly dripping the first part of precipitator into a manganese nitrate solution; adding a sodium polyacrylate solution, stirring at the water bath temperature of 60 ℃, and stirring to obtain slurry 1; slowly dripping the second part of precipitator into the slurry 1, stirring, aging, filtering to obtain a precipitate, cleaning, filtering, and drying to obtain powder; firing the powder in an oxygen atmosphere to obtain D50: the manganese dioxide with the particle size of 30-35 mu m is used for preparing manganese dioxide particles, so that the energy consumption is low, the preparation process is simple and feasible, and the cost is low; and the period is not long, and the method is suitable for mass production.
Description
Technical Field
The invention belongs to the field of manganese dioxide material preparation, and particularly relates to a manganese dioxide composite material D50: a chemical preparation method of manganese dioxide particles with the particle size of 30-35 mu m.
Background
The lithium battery is a generic name of a chemical power supply series taking metal lithium as a negative electrode, and is a high-voltage and high-energy battery. Since the initial assumption of lithium batteries was made in 1958, the development of lithium batteries has been extremely rapid. Currently, the lithium ion battery cathode materials mainly used in commercialization are: spinel-type lithium manganate, layered-structured lithium transition metal oxides, olivine-structured lithium transition metal phosphates, and the like. Among them, spinel lithium manganate is particularly spotlighted because of its excellent thermal stability, abundant resource characteristics and good safety. Manganese dioxide is commonly used as an active material for dry battery cells because it is a cheap and abundant material and it has excellent discharge and long-term storage properties.
To date, manganese dioxide for batteries in the world has remained primarily derived from electrolytic manganese dioxide. However, the electrolytic manganese dioxide has the problems of long production period, high power consumption, great environmental pollution, large equipment investment and the like, which cannot adapt to the sustainable development of the current human society. In addition, the manganese dioxide with the general specification is not too small in particle, and is crushed to obtain manganese dioxide with the particle size of about 0.3 mm. There is no properly sized particle to meet the customer needs.
Disclosure of Invention
The invention aims to solve the problems of high production cost, complex process and low production efficiency of the conventional method for preparing common manganese dioxide, and the precipitated particles are small, and provides the chemical preparation method of the manganese dioxide particles, which has the advantages of simple and feasible process, low production cost and high production efficiency, and the D50 is about 30-35 mu m. Finding the right stirring intensity, reaction time, concentration and additive, the invention prepares a D50: about 30-35m of manganese dioxide particles, and solves the problems of uneven particles, wider peak shape distribution and excessive small particles in the traditional preparation of manganese dioxide.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method of making a D50: the chemical preparation method of manganese dioxide particles with the particle size of about 30-35 mu m comprises the following specific preparation steps:
(1) preparing a precipitant solution, and dividing the precipitant solution into 2 parts, wherein the mass ratio of the first part to the second part is 1: 2;
(2) slowly dropping the first part of precipitator into the manganese nitrate solution;
(3) adding the sodium polyacrylate solution after dropwise adding in the step (2), uniformly stirring at the rotating speed of 50-60r/min, stirring, placing at the water bath temperature of 60 ℃ for stirring for 2 hours, and stirring to obtain slurry 1;
(4) slowly dripping a second part of precipitator into the slurry 1, stirring, aging at 60 ℃ for 3h, filtering to obtain precipitates after aging, repeatedly cleaning impurities with deionized water, and performing suction filtration to obtain powder;
(5) heating the powder to 300-400 ℃ in an oxygen atmosphere, and firing to obtain D50: manganese dioxide of 30-35 μm.
The precipitator is one or a mixture of sodium hydroxide and sodium carbonate; the molar concentration of the precipitant solution is 0.5-0.8 mol/L.
The dripping speed of the precipitant is 0.3-1L/min.
D50: manganese dioxide particles of 30-35 μm are used in lithium electronic battery materials.
Compared with the prior art, the beneficial effect of this application is:
(1) the invention adopts a precipitation method to prepare manganese dioxide particles, and can accurately prepare the manganese dioxide particles D50: manganese dioxide particles of 30-35 μm, facilitating their use in lithium-ion batteries;
(2) the invention adds sodium polyacrylate as additive into slurry 1, and the addition ratio is D50: the manganese dioxide particles with the particle size of 30-35 mu m play an important role, not only can further enlarge the particles, but also can generate a synergistic effect with a precipitator, and solves the problems of uneven particles and wider peak shape distribution;
(3) the invention finds that the precipitator is added in 2 portions, which is beneficial to promoting the aggregation and growth of particles, and the preparation method of the invention for preparing manganese dioxide particles has the advantages of low energy consumption, simple and easy preparation process and lower cost; and the period is not long, and the method is suitable for mass production.
Drawings
Fig. 1 is a particle size distribution diagram of manganese dioxide prepared in example 1.
Fig. 2 is a particle size distribution diagram of manganese dioxide prepared in example 2.
Detailed description of the invention
Example 1
(1) Weighing 6Kg of manganese nitrate crystal (the conversion rate of the purchased manganese nitrate crystal is 50%), adding 33.5L of deionized water for dissolving, and uniformly stirring at 50 revolutions per minute to prepare a manganese nitrate solution with the concentration of 0.5 mol/L;
(2) weighing 1.34Kg of sodium hydroxide, adding 41.9L of deionized water, and uniformly stirring to prepare a sodium hydroxide solution with the concentration of 0.8mol/L, wherein the sodium hydroxide solution is divided into 2 parts, and the mass ratio of the first part to the second part is 1: 2;
(3) slowly dripping 14L of sodium hydroxide solution into the manganese nitrate solution, wherein the dripping speed is controlled to be 300mL/min, and the dripping temperature is controlled to be 30 ℃;
(4) weighing 6g of sodium polyacrylate, adding 6L of pure water to dissolve the sodium polyacrylate to obtain a sodium polyacrylate solution, dropwise adding the sodium polyacrylate solution after the dropwise adding in the step (3) is finished, and dropwise adding to obtain slurry 1;
(5) stirring the slurry 1 at the water bath temperature of 60 ℃ for 2 hours, slowly dropwise adding the rest 27.9L of sodium hydroxide solution after stirring, stirring for 15min after dropwise adding, standing and aging at 60 ℃ for 3 hours, performing suction filtration after aging, collecting a filter cake, washing the filter cake with 750L of deionized water, introducing oxygen into a furnace kiln, firing the mixture to form manganese dioxide at 350 ℃, and detecting to obtain the manganese dioxide with the particle size of D50:31.32 microns.
Example 2
(1) Weighing 10Kg of manganese nitrate crystal, (the conversion rate of the purchased manganese nitrate crystal is 50%), adding 34.9L of deionized water for dissolving, and uniformly stirring at 55 revolutions per minute to prepare a manganese nitrate solution with the concentration of 0.8 mol/L;
(2) weighing 2.96Kg of sodium carbonate, adding 46.5L of deionized water, stirring uniformly to prepare a sodium hydroxide solution with the concentration of 0.6mol/L, dividing into 2 parts, wherein the mass ratio of the first part to the second part is 1: 2;
(3) slowly dripping 15.5L of sodium carbonate solution into the manganese nitrate solution at the speed of 350ml/min, and controlling the dripping temperature to be 35 ℃;
(4) weighing 10 g of sodium polyacrylate, adding 10L of pure water to dissolve the sodium polyacrylate to obtain a sodium polyacrylate solution, dropwise adding the sodium polyacrylate solution after the dropwise adding in the step (3) is finished, and dropwise adding to obtain slurry 1;
(5) the slurry 1 was stirred at a water bath temperature of 60 ℃ for 2 hours and after stirring the remaining 31L of sodium hydroxide solution was slowly added dropwise. Stirring for 15min after the dropwise addition is finished, standing and aging for 3 hours at 60 ℃, filtering after aging, collecting filter cakes, removing redundant impurities by using 1000L of deionized water, introducing oxygen into a furnace kiln, burning at 400 ℃ to form manganese dioxide, and detecting to obtain the manganese dioxide with the particle size of D50:33.44 mu m.
Comparative example 1
Comparative example 1 compared to example 1, the preparation conditions were substantially the same except that the precipitant was not added in 2 portions.
(1) Weighing 6Kg of manganese nitrate crystal (the conversion rate of the purchased manganese nitrate crystal is 50%), adding 33.5L of deionized water for dissolving, and uniformly stirring at 50 revolutions per minute to prepare a manganese nitrate solution with the concentration of 0.5 mol/L;
(2) weighing 1.34Kg of sodium hydroxide, adding 41.9L of deionized water, and stirring uniformly to prepare a sodium hydroxide solution with the concentration of 0.8 mol/L;
(3) slowly dripping the sodium hydroxide solution obtained in the step (2) into a manganese nitrate solution at a speed of 300mL/min and a temperature of 30 DEG C
(4) Weighing 6g of sodium polyacrylate, adding 6L of pure water to dissolve the sodium polyacrylate to obtain a sodium polyacrylate solution, dropwise adding the sodium polyacrylate solution after the dropwise adding in the step (3) is finished, and dropwise adding to obtain slurry 1;
(5) stirring the slurry 1 at the water bath temperature of 60 ℃ for 2 hours, then standing and aging at 60 ℃ for 3 hours, filtering after aging, collecting filter cakes, washing the filter cakes with 750L of deionized water, introducing oxygen into a kiln at 350 ℃ to burn into manganese dioxide, and detecting to obtain the manganese dioxide with the particle size of D50:6.88 μm.
Comparative example 2
Comparative example 2 compared to example 1, the preparation conditions were substantially the same except that no sodium polyacrylate solution was added.
(1) Weighing 6Kg of manganese nitrate crystal (the conversion rate of the purchased manganese nitrate crystal is 50%), adding 33.5L of deionized water for dissolving, and uniformly stirring at 50 revolutions per minute to prepare a manganese nitrate solution with the concentration of 0.5 mol/L;
(2) weighing 1.34Kg of sodium hydroxide, adding 41.9L of deionized water, and uniformly stirring to prepare a sodium hydroxide solution with the concentration of 0.8mol/L, wherein the sodium hydroxide solution is divided into 2 parts, and the mass ratio of the first part to the second part is 1: 2;
(3) slowly dripping 14L of sodium hydroxide solution into the manganese nitrate solution, wherein the dripping speed is controlled to be 300mL/min, and the dripping temperature is controlled to be 30 ℃;
(4) stirring the slurry 1 at the water bath temperature of 60 ℃ for 2 hours, slowly dropwise adding the rest 27.9L of sodium hydroxide solution after stirring, stirring for 15min after dropwise adding, standing and aging at 60 ℃ for 3 hours, performing suction filtration after aging, collecting a filter cake, washing the filter cake with 750L of deionized water, introducing oxygen into a furnace kiln, burning to form manganese dioxide at 350 ℃, and detecting to obtain the manganese dioxide with the particle size of D50:13.32 mu m.
Comparative example 3
Comparative example 3 preparation conditions were substantially the same as in example 1 except that slurry 1 was not stirred at a bath temperature of 60 c for 2 hours.
(1) Weighing 6Kg of manganese nitrate crystal (the conversion rate of the purchased manganese nitrate crystal is 50%), adding 33.5L of deionized water for dissolving, and uniformly stirring at 50 revolutions per minute to prepare a manganese nitrate solution with the concentration of 0.5 mol/L;
(2) weighing 1.34Kg of sodium hydroxide, adding 41.9L of deionized water, and uniformly stirring to prepare a sodium hydroxide solution with the concentration of 0.8mol/L, wherein the sodium hydroxide solution is divided into 2 parts, and the mass ratio of the first part to the second part is 1: 2;
(3) slowly dripping 14L of sodium hydroxide solution into the manganese nitrate solution, wherein the dripping speed is controlled to be 300mL/min, and the dripping temperature is controlled to be 30 ℃;
(4) weighing 6g of sodium polyacrylate, adding 6L of pure water to dissolve the sodium polyacrylate to obtain a sodium polyacrylate solution, dropwise adding the sodium polyacrylate solution after the dropwise adding in the step (3) is finished, and dropwise adding to obtain slurry 1;
(5) stirring the slurry 1 at room temperature for 2 hours, slowly dropwise adding the rest 27.9L of sodium hydroxide solution after stirring, stirring for 15min after dropwise adding, standing and aging at room temperature for 3 hours, performing suction filtration after aging, collecting filter cakes, washing the filter cakes with 750L of deionized water, introducing oxygen into a kiln at 350 ℃, burning the filter cakes into manganese dioxide, and detecting to obtain the manganese dioxide with the particle size of D50:18.18 microns.
Claims (5)
1. A method of making a D50: the preparation method of the manganese dioxide particles with the particle size of 30-35 mu m is characterized by comprising the following specific preparation steps:
(1) preparing a precipitant solution, and dividing the precipitant solution into 2 parts, wherein the mass ratio of the first part to the second part is 1: 2; the precipitator is one or a mixture of sodium hydroxide and sodium carbonate;
(2) slowly dropping the first part of precipitator into the manganese nitrate solution;
(3) adding a sodium polyacrylate solution after dropwise adding in the step (2), and uniformly stirring at a rotating speed of 50-60r/min to obtain slurry 1;
(4) stirring the slurry 1 at a water bath temperature of 60 ℃, slowly dropwise adding a second precipitator after stirring, aging, filtering to obtain a precipitate, repeatedly washing impurities with deionized water, and performing suction filtration to obtain powder; the aging temperature is 60 ℃, and the aging time is 3 hours;
(5) heating the powder to 300-400 ℃ in an oxygen atmosphere, and firing to obtain D50: manganese dioxide of 30-35 μm.
2. The D50 of claim 1: the preparation method of the manganese dioxide particles with the particle size of 30-35 μm is characterized by comprising the following steps: the molar concentration of the precipitant solution is 0.5-0.8 mol/L.
3. The D50 of claim 1: the preparation method of the manganese dioxide particles with the particle size of 30-35 μm is characterized by comprising the following steps: the dripping speed of the precipitant is 0.3-1L/min.
4. The D50 of claim 1: the preparation method of the manganese dioxide particles with the particle size of 30-35 μm is characterized by comprising the following steps: the slurry 1 was stirred at a water bath temperature of 60 ℃ for 2 h.
5. D50 prepared according to the process of any one of claims 1-4: the application of manganese dioxide particles with the particle size of 30-35 μm is characterized in that: the manganese dioxide is used in lithium electronic battery materials.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3647375A (en) * | 1969-10-22 | 1972-03-07 | Japan Metals & Chem Co Ltd | Method of producing manganese dioxide |
| CN1919741A (en) * | 2006-09-19 | 2007-02-28 | 北京科技大学 | Method for preparing high apparent density manganese dioxide using manganese sulfate solution |
| CN102040247A (en) * | 2010-11-20 | 2011-05-04 | 湖北开元化工科技股份有限公司 | Method and device for producing chemical manganese dioxide |
| CN102557145A (en) * | 2012-02-22 | 2012-07-11 | 中信大锰矿业有限责任公司 | Method for preparing low-impurity manganese oxide |
| CN105502490A (en) * | 2015-04-21 | 2016-04-20 | 江西晶安高科技股份有限公司 | Coarse-grained sphere-like zirconium hydroxide with large specific surface area and preparation method of zirconium hydroxide |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3647375A (en) * | 1969-10-22 | 1972-03-07 | Japan Metals & Chem Co Ltd | Method of producing manganese dioxide |
| CN1919741A (en) * | 2006-09-19 | 2007-02-28 | 北京科技大学 | Method for preparing high apparent density manganese dioxide using manganese sulfate solution |
| CN102040247A (en) * | 2010-11-20 | 2011-05-04 | 湖北开元化工科技股份有限公司 | Method and device for producing chemical manganese dioxide |
| CN102557145A (en) * | 2012-02-22 | 2012-07-11 | 中信大锰矿业有限责任公司 | Method for preparing low-impurity manganese oxide |
| CN105502490A (en) * | 2015-04-21 | 2016-04-20 | 江西晶安高科技股份有限公司 | Coarse-grained sphere-like zirconium hydroxide with large specific surface area and preparation method of zirconium hydroxide |
Non-Patent Citations (2)
| Title |
|---|
| 氨缓冲体系强化高纯重质碳酸锰的制备;陈南雄等;《化工学报》;20160731;第67卷(第7期);第1.3-2.3节 * |
| 石英晶体微天平分析不同介孔二氧化锰材料的电化学性能;李家玉等;《分析化学研究报告》;20170430;第45卷(第4期);摘要 * |
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